Home / 145,222.04-217,918.92-78,660.56

Finding the Fourth Proportional to 145,222.04, 217,918.92 and 78,660.56

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Solution

The fourth proportional to 145,222.04, 217,918.92 and 78,660.56 is: 118,037.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,222.04 : 217,918.92 = 78,660.56 : x
  2. Step 2: Convert to fraction form
    145,222.04/217,918.92 = 78,660.56/x
  3. Step 3: Cross multiply
    145,222.04x = 217,918.92 × 78,660.56
  4. Step 4: Simplify right side
    145,222.04x = 17,141,624,281.80
  5. Step 5: Solve for x
    x = 17,141,624,281.80/145,222.04
  6. Step 6: Final answer
    x = 118,037.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.